test: stabilize TestGetAndResetRecentInfoSchemaTS (#58589)

close pingcap/tidb#58453

pkg/infoschema/cache.go

@@ -74,7 +74,7 @@ func NewCache(r autoid.Requirement, capacity int) *InfoCache {
 //	The keepAlive() function will compare the InfoSchemaV2's ts with Data.recentMinTS, and
 //	update the Data.recentMinTS to smaller one.
 //
-// In a nutshell, every round of ReportMinStartTS(), the minimal known TS used be InfoSchemaV2 APIs will be reported.
+// In a nutshell, every round of ReportMinStartTS(), the minimal known TS used by InfoSchemaV2 APIs will be reported.
 // Some corner cases might happen: the caller take an InfoSchemaV2 instance and not use it immediately.
 // Seveval rounds later, that InfoSchema is used and its TS is reported to block GC safepoint advancing.
 // But that's too late, the GC has been done, "GC life time is shorter than transaction duration" error still happen.

pkg/infoschema/test/infoschemav2test/v2_test.go

@@ -563,6 +563,7 @@ func TestInfoSchemaCachedAutoIncrement(t *testing.T) {
 func TestGetAndResetRecentInfoSchemaTS(t *testing.T) {
 	store, dom := testkit.CreateMockStoreAndDomain(t)
 	tk := testkit.NewTestKit(t, store)
+	tk.MustExec("set @@global.tidb_schema_cache_size = 1024 * 1024 * 1024")
 
 	// For mocktikv, safe point is not initialized, we manually insert it for snapshot to use.
 	timeSafe := time.Now().Add(-48 * 60 * 60 * time.Second).Format("20060102-15:04:05 -0700 MST")